New energy fan access safety device

Abstract

The utility model discloses a new energy fan access safety device. Comprising an L-shaped fixed seat, a servo electric cylinder, a movable push plate, a push column and a pressing plate, wherein the L-shaped fixed seat is fixed on the outer side surface of a base and is positioned above a fan shaft; the servo electric cylinder is fixed above the L-shaped fixed seat; the movable push plate is movably mounted at the bottom of the L-shaped fixed seat and is connected with a push rod at the bottom end of the servo electric cylinder; the arc-shaped pressing block is mounted at the bottom of the pressing plate; according to the new energy draught fan access safety device, all the components are installed in an external mode, overhaul and maintenance can be directly carried out outside after later damage, a unit does not need to be disassembled, meanwhile, the pressing block easy to abrade is of a quick disassembly structure, follow-up operators can complete disassembly, assembly and replacement of the pressing block in a bare-handed mode, and operation is convenient. The later maintenance convenience of the whole new energy fan access safety device is greatly improved, and the maintenance cost and the downtime are reduced.

Description

Technical Field

[0001] This utility model belongs to the field of wind turbine technology, specifically relating to a safety device for connecting new energy wind turbines. Background Technology

[0002] Wind power generation, as an important form of new energy power generation, has been widely used globally due to its significant environmental benefits, short construction period, and flexible installed capacity. However, connecting new energy wind turbines to the power grid presents a series of technical challenges. In particular, wind turbines are typically installed in areas with high wind volume, resulting in high turbine speeds and correspondingly high output power. Directly connecting high-power wind turbines to the grid alters the electrical characteristics of the grid, leading to a decrease in the overall safety and stability of the grid. To address this issue, various safety devices for connecting new energy wind turbines have emerged in existing technologies, such as those published in CN21803. The existing patent 0437U discloses "a safety device for connecting a new energy wind turbine, which solves the problem that excessive output power of the wind turbine when connected to the power grid can easily affect the safety and stability of the power grid. The key technical points of the solution are: it includes a speed limiting disc and a clamping device. The speed limiting disc is installed on the shaft of the wind turbine, and the clamping device is located on the side of the speed limiting disc. The clamping device includes a clamping column and a drive rod. The clamping column is installed in the support seat of the wind turbine, and one end of the clamping column is close to the speed limiting disc." It can be seen that the application describes a common safety device for connecting a new energy wind turbine, which can reduce the speed of the wind turbine shaft by relying on the cooperation of the clamping block and the speed limiting disc.

[0003] However, most components of existing safety devices for connecting new energy wind turbines are built-in, which makes subsequent maintenance difficult. Once these built-in components are damaged, replacement is very cumbersome and may even require disassembling the entire wind turbine system, which undoubtedly increases maintenance costs and downtime. At the same time, the clamping blocks of existing safety devices for connecting new energy wind turbines are not easy to remove and replace quickly after wear, reducing the convenience of later maintenance of the entire device. Therefore, this utility model needs to improve and optimize the existing safety devices for connecting new energy wind turbines. Utility Model Content

[0004] The purpose of this utility model is to provide a safety device for the connection of new energy wind turbines, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a safety device for connecting new energy wind turbines, comprising...

[0006] An L-shaped mounting base fixed to the outer surface of the base and above the fan shaft; a servo electric cylinder fixed above the L-shaped mounting base; a movable push plate movably mounted at the bottom of the L-shaped mounting base and connected to the push rod at the bottom of the servo electric cylinder; a push column fixed to the bottom of the movable push plate; a pressure plate fixed to the bottom of the push column; an arc-shaped clamping block mounted at the bottom of the pressure plate; and a speed limiting disc fixed to the surface of the fan shaft and positioned corresponding to the arc-shaped clamping block.

[0007] Preferably, a T-shaped seat is fixed to the bottom surface of the pressure plate, and a T-shaped disassembly opening corresponding to the T-shaped seat is opened on the top surface of the arc-shaped clamping block, and the T-shaped seat slides into the T-shaped disassembly opening.

[0008] Preferably, it also includes a quick-release structure, which is disposed on the pressure plate.

[0009] Preferably, the quick-release structure includes a cylindrical inner groove inside the pressure plate, a cylindrical inner rotating block rotatably disposed inside the cylindrical inner groove, and two shafts fixed at both ends of the cylindrical inner rotating block. The ends of the two shafts extend through to both sides of the pressure plate and are fixed with limit baffles. The bottom end of the limit baffles extends to the side of the arc-shaped pressing block to block the arc-shaped pressing block.

[0010] Preferably, both sides of the pressure plate are provided with circular rod holes corresponding to the shaft, and the circular rod holes communicate with the cylindrical inner groove.

[0011] Preferably, the cylindrical inner rotating block has an inner sliding groove inside, and a spring and a telescopic locking ball are installed in the inner sliding groove. The inner wall of the cylindrical inner groove has two symmetrical limiting slots corresponding to the telescopic locking ball. The telescopic locking ball is movably installed in the inner sliding groove by the spring, and the end of the telescopic locking ball pops out into one of the limiting slots.

[0012] Preferably, one end of the spring is fixed to the inner wall of the inner groove, and the other end of the spring is fixed to the telescopic retaining bead.

[0013] Preferably, a guide rod is fixed to the top of the movable push plate relative to the right side of the push rod, and the top end of the guide rod extends through to the top of the L-shaped fixing seat.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: The components of the new energy wind turbine access safety device of this utility model are all externally installed, so that maintenance can be carried out directly from the outside after damage, without disassembling the unit. At the same time, the easily worn clamping block also adopts a quick-release structure, so that the operators can disassemble and replace the clamping block by hand. This greatly improves the convenience of maintenance of the entire new energy wind turbine access safety device, and also reduces maintenance costs and downtime. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This utility model Figure 1 A magnified view of a portion of region A in the middle;

[0017] Figure 3 This is a cross-sectional view of the connection between the arc-shaped clamping block and the pressure plate of this utility model;

[0018] Figure 4 This utility model Figure 3 A magnified view of a portion of region B in the middle;

[0019] In the diagram: 1. Speed ​​limiting disc; 2. L-shaped fixed base; 3. Servo electric cylinder; 31. Push rod; 4. Movable push plate; 41. Guide rod; 5. Push column; 6. Pressure plate; 61. T-shaped seat; 7. Arc-shaped clamping block; 71. T-shaped disassembly port; 8. Quick release structure; 81. Cylindrical inner groove; 82. Cylindrical inner rotating block; 83. Shaft; 84. Limiting baffle; 85. Inner sliding groove; 86. Spring; 87. Telescopic retaining ball; 88. Limiting retaining groove; 9. Fan shaft; 10. Base. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example

[0022] Please see Figures 1 to 4 This is an embodiment of the present utility model, which provides a technical solution: a safety device for connecting a new energy wind turbine, including...

[0023] An L-shaped mounting base 2, fixed to the outer surface of the base 10 and above the wind turbine shaft 9 by multiple bolts; a servo electric cylinder 3 fixed above the L-shaped mounting base 2; a movable push plate 4 movably mounted on the bottom of the L-shaped mounting base 2 and connected to the push rod 31 at the bottom of the servo electric cylinder 3; a push column 5 welded and fixed to the bottom of the movable push plate 4; a pressure plate 6 welded and fixed to the bottom of the push column 5; an arc-shaped clamping block 7 installed at the bottom of the pressure plate 6; and a speed limiting disc 1 fixed to the surface of the wind turbine shaft 9 and positioned corresponding to the arc-shaped clamping block 7. When the new energy wind turbine needs to be connected to the grid, the servo electric cylinder 3... The start-up causes the push rod 31 to move downwards along with the movable push plate 4, push column 5, and pressure plate 6, allowing the arc-shaped clamping block 7 to move downwards and press against the surface of the speed limiting disc 1. This brakes and decelerates the rotating fan shaft 9 and the speed limiting disc 1, thereby reducing the output power of the new energy wind turbine, minimizing the impact on grid stability during the connection process, and improving safety. After the new energy wind turbine is connected, the servo electric cylinder 3 runs again, and the arc-shaped clamping block 7 moves upwards to reset. Because the arc-shaped clamping block 7 adopts an arc design, it can increase the contact area with the speed limiting disc 1, thus increasing the deceleration effect.

[0024] In this embodiment, preferably, a T-shaped seat 61 is welded and fixed to the bottom surface of the pressure plate 6, and a T-shaped disassembly and assembly port 71 corresponding to the T-shaped seat 61 is opened on the top surface of the arc-shaped clamping block 7, and the T-shaped seat 61 slides into the T-shaped disassembly and assembly port 71, so that the arc-shaped clamping block 7 can be stably hung on the bottom of the pressure plate 6.

[0025] In this embodiment, preferably, a quick-release structure 8 is also included, which is disposed on the pressure plate 6.

[0026] In this embodiment, preferably, the quick-release structure 8 includes a cylindrical inner groove 81 formed inside the pressure plate 6, a cylindrical inner rotating block 82 rotatably disposed in the cylindrical inner groove 81, and two shafts 83 respectively fixed at both ends of the cylindrical inner rotating block 82. The ends of the two shafts 83 respectively penetrate to the two side surfaces of the pressure plate 6 and are fixed with limit baffles 84. The bottom end of the limit baffles 84 extends to the side of the arc-shaped clamping block 7 to block the arc-shaped clamping block 7. Through the blocking of the two limit baffles 84 on both sides, the arc-shaped clamping block 7 can be effectively blocked and limited, ensuring the installation stability of the arc-shaped clamping block 7.

[0027] In this embodiment, preferably, both sides of the pressure plate 6 are provided with circular rod holes corresponding to the shaft 83, and the circular rod holes are connected to the cylindrical inner groove 81 to allow the shaft 83 to pass through smoothly and rotate subsequently.

[0028] In this embodiment, preferably, the cylindrical inner rotating block 82 has an inner sliding groove 85 inside, and a spring 86 and a telescopic locking ball 87 are installed inside the inner sliding groove 85. The inner wall of the cylindrical inner groove 81 has two symmetrically arranged limiting slots 88 corresponding to the telescopic locking ball 87. The telescopic locking ball 87 is movably installed in the inner sliding groove 85 by the spring 86, and the end of the telescopic locking ball 87 pops out into one of the limiting slots 88. This allows for engagement and limiting of the cylindrical inner rotating block 82 and the limiting baffle 84 during daily use, ensuring the positional stability of the limiting baffle 84. When the subsequent arc-shaped clamping block 7 wears out and needs to be removed for replacement, simply push the two limiting baffles 84, causing the shaft 83 to rotate with the cylindrical inner rotating block 82, and causing the end of the telescopic locking ball 87 to gradually... As the material is gradually squeezed into the inner groove 85, the cylindrical inner rotating block 82 can rotate smoothly within the cylindrical inner groove 81, causing the limiting baffle 84 to rotate away from one side of the arc-shaped clamping block 7, thus no longer obstructing the arc-shaped clamping block 7. At this point, the arc-shaped clamping block 7 can be moved laterally and quickly removed directly from the bottom of the pressure plate 6. The same principle applies to subsequent installations. The arc-shaped clamping block 7 is moved laterally to the bottom of the pressure plate 6, and the T-shaped seat 61 is slid into the T-shaped disassembly port 71. Then, the limiting baffle 84 is rotated downwards, so that the bottom end of the limiting baffle 84 is once again on one side of the arc-shaped clamping block 7. The two limiting baffles 84 can once again block and limit the arc-shaped clamping block 7, ensuring the installation stability of the arc-shaped clamping block 7 and completing the quick disassembly and replacement of the arc-shaped clamping block 7.

[0029] In this embodiment, preferably, one end of the spring 86 is fixed to the inner wall of the inner groove 85, and the other end of the spring 86 is fixed to the telescopic retaining bead 87.

[0030] In this embodiment, preferably, a guide rod 41 is welded and fixed to the top of the movable push plate 4 relative to the right side of the push rod 31, and the top end of the guide rod 41 extends through to the top of the L-shaped fixed seat 2, which can play an effective guiding and supporting role when the movable push plate 4 is raised and lowered.

[0031] Although embodiments of the present invention have been shown and described (see the detailed description above), it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A safety device for connecting a new energy wind turbine, characterized in that: include An L-shaped mounting base (2) fixed on the outer surface of the base (10) and above the fan shaft (9), a servo electric cylinder (3) fixed on the L-shaped mounting base (2), a movable push plate (4) movably mounted on the bottom of the L-shaped mounting base (2) and connected to the push rod (31) at the bottom of the servo electric cylinder (3), a push column (5) fixed on the bottom of the movable push plate (4), a pressure plate (6) fixed on the bottom of the push column (5), an arc-shaped clamping block (7) installed on the bottom of the pressure plate (6), and a speed limiting disc (1) fixed on the surface of the fan shaft (9) and positioned corresponding to the arc-shaped clamping block (7).

2. The safety device for connecting a new energy wind turbine according to claim 1, characterized in that: The bottom surface of the pressure plate (6) is fixed with a T-shaped seat (61), and the top surface of the arc-shaped pressing block (7) is provided with a T-shaped disassembly and assembly port (71) corresponding to the T-shaped seat (61), and the T-shaped seat (61) slides into the T-shaped disassembly and assembly port (71).

3. The new energy wind turbine access safety device according to claim 1, characterized in that: It also includes a quick-release structure (8), which is disposed on the pressure plate (6).

4. A new energy wind turbine access safety device according to claim 3, characterized in that: The quick-release structure (8) includes a cylindrical inner groove (81) opened inside the pressure plate (6), a cylindrical inner rotating block (82) rotatably disposed in the cylindrical inner groove (81), and two shafts (83) respectively fixed at both ends of the cylindrical inner rotating block (82). The ends of the two shafts (83) respectively penetrate to the two side surfaces of the pressure plate (6) and are fixed with limit baffles (84). The bottom end of the limit baffles (84) extends to the side of the arc-shaped pressing block (7) to block the arc-shaped pressing block (7).

5. A new energy wind turbine access safety device according to claim 4, characterized in that: Both sides of the pressure plate (6) are provided with circular rod holes corresponding to the shaft (83), and the circular rod holes are connected to the cylindrical inner groove (81).

6. A new energy wind turbine connection safety device according to claim 5, characterized in that: The cylindrical inner rotating block (82) has an inner sliding groove (85) inside. The inner sliding groove (85) is equipped with a spring (86) and a telescopic locking ball (87). The inner wall of the cylindrical inner groove (81) has two symmetrically opened limiting slots (88) corresponding to the telescopic locking ball (87). The telescopic locking ball (87) is movably installed in the inner sliding groove (85) by the spring (86), and the end of the telescopic locking ball (87) pops out into one of the limiting slots (88).

7. A new energy wind turbine access safety device according to claim 6, characterized in that: One end of the spring (86) is fixed to the inner wall of the inner groove (85), and the other end of the spring (86) is fixed to the telescopic ball (87).

8. A new energy wind turbine access safety device according to claim 1, characterized in that: The top of the movable push plate (4) is also fixed with a guide rod (41) relative to the right side of the push rod (31), and the top end of the guide rod (41) extends through to the top of the L-shaped fixed seat (2).

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